13668207 has 32 divisors (see below), whose sum is σ = 21888000. Its totient is φ = 7578144.

The previous prime is 13668169. The next prime is 13668227. The reversal of 13668207 is 70286631.

It is a de Polignac number, because none of the positive numbers 2^k-13668207 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13668227) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 37894 + ... + 38252.

It is an arithmetic number, because the mean of its divisors is an integer number (684000).

Almost surely, 2^13668207 is an apocalyptic number.

13668207 is a deficient number, since it is larger than the sum of its proper divisors (8219793).

13668207 is an equidigital number, since it uses as much as digits as its factorization.

13668207 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 420 (or 406 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 33.

The square root of 13668207 is about 3697.0538270358. The cubic root of 13668207 is about 239.0950119139.

The spelling of 13668207 in words is "thirteen million, six hundred sixty-eight thousand, two hundred seven".